1. Trichomonas vaginalis Symptoms: increased leucorrhea, milky white or yellow, sometimes purulent leucorrhea, often foamy, smelly, bloody leucorrhea in severe cases, painful urination, frequent urination, hematuria. Hazards: It can be complicated by trichomonas urethritis, cystitis, pyelitis, and because trichomonas can swallow sperm, it can cause infertility and affect sex life, etc. 2, mycotic vaginitis Symptoms: vulvar itching, burning pain in vulva and vagina, increased leucorrhea in the form of bean curd, sometimes accompanied by frequent urination, frequent urination, painful urination, painful sexual intercourse, gynecological examination can be seen on the inner labia minora and vaginal mucosa attached to the white membranous material, erased to reveal the red and swollen mucosal surface, the acute stage can be seen damaged erosion surface or superficial ulcers. The danger: not easy to eradicate, easy to recur, cause premature birth, fetal infection malformation, etc. The actual cervical erosion is caused by the chronic cervicitis, the leucorrhea, yellow pus-like or yellow, the waist and abdomen is swollen or itchy, the food is less, the face is less florid, according to the size of the erosion area, can be divided into mild, moderate and severe three. Hazards: Causes vaginal adhesions, pus accumulation in the vagina or pus accumulation in the uterine cavity. 4. Non-specific vaginitis Symptoms: Vaginal cramping and burning, accompanied by pelvic discomfort and general malaise. The vaginal discharge is increased, purulent, plasma, and smelly. As the discharge irritates the urethra, it can cause frequent, urgent and painful urination. Hazards: It may cause vaginal adhesions, pus accumulation in the vagina or pus accumulation in the uterine cavity, pelvic inflammatory disease, premature rupture of fetal membranes and chorioamnionitis, etc. 5. Bacterial vaginitis Symptoms: Increased leucorrhea, grayish white, thin and foamy. The vaginal mucosa is congested and bleeding spots are scattered. The vulva is itchy and has a burning sensation, and the pubic area is foul-smelling. Hazards: Induced genital infection, pelvic inflammatory disease, perinephritis, painful intercourse, etc. Symptoms: increased leucorrhea, yellow, watery, purulent in severe cases, foul smell, sometimes bloody or with spotting bleeding, itching or burning sensation in vulva, dry pain, lower abdominal cramps, frequent urination, urgent urination, painful urination when it affects urethra. Hazards: Causes vaginal adhesions, pus accumulation in the vagina or pus accumulation in the uterine cavity.